Table 3.

Correlations between OPUS-UEFS and age, radius length, and daily usage duration among subjects who used the 3D-printed prosthesis

OPUS-UEFS	Radius length (mm)		Age (yr)		Daily usage duration (hr)
	r	P-value	r	P-value	r	P-value
Post-application 1 mon	0.646a)	0.043	–0.389	0.266	0.588	0.074
Post-application 3 mon	0.815a)	0.004	–0.297	0.405	0.474	0.166
Pre–Post 1st	–0.693a)	0.026	0.564	0.090	–0.243	0.498
Pre–Post 3rd	–0.634a)	0.049	0.170	0.638	0.076	0.834

OPUS-UEFS, Orthotics Prosthetics User Survey–Upper Extremity Functional Status; 3D, three-dimensional; Pre–Post 1st, between pre-application status and 1 month post-application; Pr–Post 3rd, between pre-application and 3 months post-application.

^a)Statistically significant, P<0.05.